xref: /openbmc/linux/scripts/dtc/Makefile (revision e15a5365)
1# SPDX-License-Identifier: GPL-2.0
2# scripts/dtc makefile
3
4hostprogs-always-$(CONFIG_DTC)		+= dtc
5hostprogs-always-$(CHECK_DT_BINDING)	+= dtc
6
7dtc-objs	:= dtc.o flattree.o fstree.o data.o livetree.o treesource.o \
8		   srcpos.o checks.o util.o
9dtc-objs	+= dtc-lexer.lex.o dtc-parser.tab.o
10
11# Source files need to get at the userspace version of libfdt_env.h to compile
12HOST_EXTRACFLAGS += -I $(srctree)/$(src)/libfdt
13
14ifeq ($(shell pkg-config --exists yaml-0.1 2>/dev/null && echo yes),)
15ifneq ($(CHECK_DT_BINDING)$(CHECK_DTBS),)
16$(error dtc needs libyaml for DT schema validation support. \
17	Install the necessary libyaml development package.)
18endif
19HOST_EXTRACFLAGS += -DNO_YAML
20else
21dtc-objs	+= yamltree.o
22# To include <yaml.h> installed in a non-default path
23HOSTCFLAGS_yamltree.o := $(shell pkg-config --cflags yaml-0.1)
24# To link libyaml installed in a non-default path
25HOSTLDLIBS_dtc	:= $(shell pkg-config yaml-0.1 --libs)
26endif
27
28# Generated files need one more search path to include headers in source tree
29HOSTCFLAGS_dtc-lexer.lex.o := -I $(srctree)/$(src)
30HOSTCFLAGS_dtc-parser.tab.o := -I $(srctree)/$(src)
31
32# dependencies on generated files need to be listed explicitly
33$(obj)/dtc-lexer.lex.o: $(obj)/dtc-parser.tab.h
34